[sane-devel] correcting upside-down pages in duplex mode using ADF

[ken]

When scanning several pages using the ADF in duplex mode, the backside 
of each page is rendered upside-down.  Is there some setting in xsane to 
flip the backside of each page vertically so that it's right-side-up?

Failing that, is there a utility to accomplish the same thing 
programmatically after the fact?

Thanks for all good tips.